两变色的

60 pre-selected patients with discolored teeth were randomly and evenly divided into 2 groups.

经过筛选的60位变色牙患者被随机均分为两组接受16%过氧化脲NGVB治疗。

Although most isolates of nondermatophyte could also produce a discoloration, they could be distin-guished from dermatophytes by colony diameters at the beginning of discoloration （≥5 mm）, and the differentiation results according to this criterion were in a good agreement with those from a reference mycology laboratory.

大多数分离的非皮肤癣菌也能使两种培养基变色，以开始变色时菌落的直径大小（≥5 mm）为非皮肤癣菌和皮肤癣菌的鉴别点，与金标准有高度的一致性。

The bulky ortho-brominated aryl groups are implanted to create nonplanarity around amino center. Thus, the effective conjugation length to the protonation site is shortened and the energy gap between neutral and protonated forms is narrowed. The protonation can only occur at the nitrogen atom of the benzothiazole and the temperature variation disturbs the equilibrium between the neutral and monocation and the reverible thermochromic effect can thus be achieved.

在邻位的位置引入立体阻碍大的溴原子，进而控制质子化过程的酸碱平衡只发生在 benzothiazole 上的氮原子上，企图达到只有中性分子，与单阳离子两种稳定的形式存在，经由外界的刺激下，例如温度或酸的量的改变，促使逆反应的发生，而达到热致变色的效果。

Two alternative copolymers of thieno[3,4b]pyrazine and triphenylamine or phenylene, P and P, were synthesized by Wittig-Horner polycondensation.

用Wittig-Horner聚合法合成了两种新的含D-π-A结构的共聚物P和P，这两个聚合物有明显的溶剂变色效应。

The code is straight forward which has two circles filled with gradient color and a story board which runs endless, unless stopped.

该代码是直接的，它与渐变色的故事董事会，运行无穷，除非停止填补两个圆圈。

We got one 26 inch striper and two misses .

我们得到一个26英寸的变色和两个错过了。

So in these two ways, tinting can increase your comfort while driving and decrease fading or discoloration of the interior's vinyl or fabric work.

所以在这两个方面，调色可以增加您在驾驶舒适性和降低褪色或变色内政部的乙烯基面料或者工作。

The electrochromic materials can be classified as anodically colored and cathodically colored materials by electrochemical reaction modes.

电致变色材料根据其电化学反应的方式可分为阳极着色和阴极着色两类。

Two photo-chromatic organic materials for CD-R/CD-RW are found. One photochromatic organic material for Blue-light DVD-R/DVD-RW is found.

发现了两种适合CD-R／CD-RW的有机光致变色光盘材料和一种可用于红光和蓝光DVD-R／DVD-RW的有机光致变色光盘材料。

Hot-Melt Laminating Machine is to laminate two or more different materialstogether through thermal radiation;meanwhile,apply appropriate pressure to make them become one composite.It has high adaptability and stability adn is widely used for laminating cloth leather,shoes soles and foaming sheets.lt use PE pellicle to replace glue which makes stronger effect and longer time for products stock,no discolouring,not easy to tear apart.This machine combines with the actiyator and automatic temperature circuit,which allows thick and thin laminating.accurate control of production quantity and quality,and is able to count amounts.Modern structure.stable performance,simple operation,low faulty rate and long operating life make it a fabulous machine

热熔复合机是通过热辐射对塑料、片材进行热熔贴合处理，把两种或两种以上不同材料相结合并施加一定压力使这复合成一体的加工机器，多用于服装皮革，鞋底鞋材，轻泡片材的复合加工，其优点用于PE薄膜替代胶水贴合，产品时间库存长，无变色迹象，不易撕开，贴合效果强于胶水几倍，具有广泛的适应性和稳定性，本机结合调速电机，自动温控电路，可方便准确的控制生产量和复合质量、可计数计码，是理想的复合设备，该机具有结构新颖，性能稳定，操作简单，故障率低，使用寿命长等诸多优点，我公司该产品设计有三种规格，用户可根据具体生产情况选购，如有需要可定做其它特殊规格的品种。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。